Cold spell occuring from September 11 2023 to September 13 2023 at -23.5°S 21.0°E

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Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Botswana
  • Namibia

Duration: 3 days

Time span: September 11 2023 to September 13 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -6.9 °C
  • Mean temperature: 14.3 °C
  • Minimum temperature anomaly: -10.5 °C
  • Minimum temperature: 10.3 °C

Event center: -23.5°S 21.0°E

Area affected: 59526 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2023-Sep-11_to_2023-Sep-13_21.0_-23.5